Application of plasma and use of deposition of noble metals applied at a certain stage of synthesis of copper oxide nanostructures can result in a significant change in the growth dynamics, as is confirmed by the simulation of the growth process reported in the paper. Interaction of plasma ions with the side surfaces of the growing nanowires creates defects on the surfaces, thus increasing the energy of oxygen adsorption from the gas phase. As a result, the concentration of oxygen on the side surface of a nanowire increase, which enhances the rate of losses of copper flux supplied from the nanowire root to the tip, thus shortening the possible length of the nanowire and increasing its diameter; the nanowires become bulkier at that. In turn, the deposition of noble metals engaged after the nanowire reaches the saturation on the dependence of its length on time, when the growth stops, allows covering the active sites of the oxygen adsorption and preventing the increase of oxygen concentration on the side surface. As a result, the rate of copper loss during the copper diffusion towards the nanowire tip along the nanowire length is decreased, thus leading to further elongation of the nanowires.
Plasma and Deposition of Noble Metals as Control Factors in Synthesis of Copper Oxide Nanostructures
Lect.Notes Mechanical Engineering
Design, Simulation, Manufacturing: The Innovation Exchange ; 2023 ; High Tatras, Slovakia June 06, 2023 - June 09, 2023
2023-05-23
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Formation of one-dimensional oxide nanostructures by intermediate deposition of noble metals
DOAJ | 2022
Plasma-enhanced thermal growth of copper oxide nanostructures on anode of glow discharge setup
DOAJ | 2021
|Noble Metals Would Prevent Hydrogen Embrittlement
NTRS | 1987
|Flame Synthesis of Zinc Oxide Nanostructures
British Library Conference Proceedings | 2008
|Flame Synthesis of Zinc Oxide Nanostructures
AIAA | 2008
|